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M41T93 - Serial SPI bus RTC

General Description

6 1.1 SPI signal description 11 1.1.1 1.1.2 1.1.3 1.1.4 Serial data output (SDO)

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www.DataSheet4U.com M41T93 Serial SPI bus RTC with battery switchover Preliminary Data Feature summary ■ ■ ■ 2.0 to 5.5V clock operating voltage Ultra-low battery supply current of 365nA Counters for tenths/hundredths of seconds, seconds, minutes, hours, day, date, month, year, and century Programmable clock calibration (analog and digital) 18 QFN16, 4mm x 4mm (QA) ■ ■ Automatic switch-over and reset output circuitry (fixed reference) – M41T93S: VCC = 3.0V to 5.5V (2.85V ≤VRST ≤3.00V) – M41T93R: VCC = 2.7V to 5.5V (2.55V ≤VRST ≤2.70V) – M41T93Z: VCC = 2.38V to 5.50V (2.25V ≤VRST ≤2.